User manual

Figure 1. Block Diagram of the MSI-P602.
I. INTRODUCTION
The MSI-P602 is a low cost, high performance global positioning
system which uses the Trimble Lassen iQ module. It provides
12-channel GPS functionality that is fully compatible with
Trimble’s popular Lassen SQ module using Trimble’s FirstGPS®
architecture which delivers complete position, velocity and time
(PVT) solutions for the host application. It features two GPS
signal sensitivity modes: Standard and Enhanced. With
Enhanced mode enabled, the module automatically switches to
higher sensitivity when satellite signals are weak. The module
also supports TSIP download of critical startup information for
fast acquisition. This aided GPS (A-GPS) startup provides hot
start performance for each power-up. The module supports the
four most popular protocols: DGPS (RTCM), TSIP (Trimble
Standard Interface Protocol), TAIP (Trimble ASCII Interface
Protocol) and NMEA 0183 with an MTBF (mean time between
failures) figure of 60 years.
The card provides two serial ports for processing the GPS data.
The primary port gives TSIP input and output data at a default
BAUD rate of 9600. This port is also selectable for the TAIP
protocol. The secondary port provides DGPS (RTCM) input and
BLOCK DIAGRAM
PC/104 16-BIT STACKTHROUGH
CONNECTOR
ADDRESS
JUMPERS
3.0V
BATTERY
TRIMBLE iQ
GPS MODULE
POWER CONVERTER
& ANTENNA
DIGITAL I/O
4 TTL INPUTS
4 TTL OUTPUTS
UART 1
TSIP GPS DATA
I/O
MSI-P602
UART 2
TAIP/NMEA
GPS CONTROL
PC/104
BUS
INTERFACE
NETWORK
PC/104
BUS
INTERRUPT
NETWORK
INTERRUPT
JUMPERS
Page 4 MSI-P602 User Manual